TABLE 3.
Changes in pH during the growth of E. coli O157:H7 ATCC 35150, ATCC 43889, and ATCC 43895 under LSMMG and NG in LB medium
| Time (h) | pHa |
|||||
|---|---|---|---|---|---|---|
| ATCC 35150 |
ATCC 43889 |
ATCC 43895 |
||||
| LSMMG | NG | LSMMG | NG | LSMMG | NG | |
| 0 | 7.08 ± 0.01 D | 7.08 ± 0.01 C | 7.09 ± 0.01 D | 7.09 ± 0.01 D | 7.06 ± 0.04 D | 7.06 ± 0.04 C |
| 3 | 6.29 ± 0.11 F | 6.35 ± 0.10 D | 6.37 ± 0.03 F | 6.42 ± 0.04 E | 6.54 ± 0.03 EG | 6.67 ± 0.04 DH |
| 6 | 6.86 ± 0.07 EG | 7.12 ± 0.07 CH | 6.86 ± 0.01 EG | 7.15 ± 0.05 DH | 6.98 ± 0.10 DG | 7.24 ± 0.10 CH |
| 12 | 7.44 ± 0.03 CG | 7.75 ± 0.06 BH | 7.44 ± 0.02 CG | 7.68 ± 0.12 CH | 7.50 ± 0.06 CG | 7.67 ± 0.07 BH |
| 24 | 8.01 ± 0.01 BG | 7.98 ± 0.01 AH | 7.97 ± 0.06 B | 7.95 ± 0.09 B | 8.08 ± 0.04 BG | 7.95 ± 0.06 AH |
| 48 | 8.25 ± 0.04 AG | 8.04 ± 0.12 AH | 8.31 ± 0.01 AG | 8.19 ± 0.08 AH | 8.35 ± 0.01 AG | 8.11 ± 0.14 AH |
a
Means ± SD; n = 3 samples for each gravity condition. A to F, values in the same column are significantly different (P < 0.05); G and H, values in the same row for each strain are significantly different (P < 0.05).